can't access string from a cell in matlab

Question

info:

C{1}(1)

 ans = 

'0.00000000     188000.00000000     '

class(C{1}(1))

ans =

cell

problem (when I am trying to access the first number in the form of string, it refuse to give me):

C{1}(1)(1:10)

Error: ()-indexing must appear last in an index expression.

How may I get the first 10 string? Thanks